Canada



J. SPRATT.

OFFAL DRIER.

(No Model.)

N0.318,050. Patented May 19, 1885.

UNITED STATES PATENT OFFICE.

JOSEPH SPBATT, OF VICTORIA, BRITIS Hv COLUMBIA, CANADA.

OFFAL-DRIER.

5PECIFICATION forming part of Letters Patent No. 318,050, dated May 19, 1885.

Application filed September 8, 1884. (No model.)

To all whom it may concern:

LII

Be it known that I, J OSEPH SPRATT, of Victoria, in the Province of British Columbia, in the Dominion of Canada, have invented certain new and useful Improvements in Offal- Driers; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, forming part of this specification, in which drawings like letters indirate corresponding parts in all the figures.

Figure 1 is a longitudinal sectional eleva tion of my improved drier. Fig. 2 is a plan of the same, a portion of the top being broken away to show the interior parts, and Fig. 3 is a transverse sectional view on the line or m, Fig. 1.

My invention has for its object to dry fish and other offal in an expeditious manner by means of hot air, hot water, or by steam injected between the double walls of a semicylindrical trough provided with beaters or stirrers oscillating therein on a longitudinal shaft, the moisture of evaporation passing off through fines in the cover of the trough.

My invention consists in the combination of a semi-cylindrical trough constructed of double walls and provided with inlet and. outlet heating-pipes, a longitudinal rock-shaft journaled therein, provided with scraper or stirrer arms to distribute and pulverize the offal in the process of drying, and a cover fitting on the trough, provided with fines to carry off the moisture of evaporation.

A is a semi-cylindrical trough constructed of double walls A A, subdivided by partitions B, forming channels O, to distribute and circulate steam, hot water, or other heating medium over the surface of the trough,

which heating medium enters through pipe c D and is discharged through pipe D at the bottom of the trough.

F are capped openings in the bottom of the trough to remove the pulverized offal after being dried. On the top of the trough fits a 5 gable-end cover, G, provided with doors H H to feed the trough with offal, and fines I I to carry off moisture of evaporation.

J is a shaft journaled in the trough longitudinally, and rocked by an arm, J, outside 0 the end of the trough. The shaft J is provided with a series of quadrant-shaped plates K, pendently keyed thereon, having flanges K K, perforated to receive radial arms M, provided with diagonallyset stirrers or scrapers M, which are forced toward the bottom of the trough by spiral springs N in tubular boxes 0, secured between the flanges K K so that by rocking the shaft J the oifal will be disturbed, the moisture of evaporation pass up the flues, and at the same time the offal will be pulverized in the process of drying for use as manure.

I claim as my invention- In combination with the trough A, provided stirrers M, as set forth, for the purpose described.

JOSEPH SPRATT.

\Vitnesses:

E. M; J OHNSON,

Notary Public, B. 0. J. MoMULLEN,

Railway Contractor, B. 0'. 

